Lantern



FIG. 1 is a perspective view of a lantern, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a left side, elevation view, the right side being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown is for environmental purposes only and forms no part of the claimed design. 

The ornamental design for a lantern, as shown and described. 